Words I think you are right to say that in real life, people don't always manage to be what their loved ones need them to be. And if my daughter was arrested for the attempted murder of her husband because apparently he was abusive and I had no idea - well, I'm sure I would be a bit of a mess, to say the least.
The issue with Pat, however, is that her current behaviour doesn't seem to ring true to her character - and this is a character who has been around for a long time.
I can't speak for the others but personally the reason why I'm starting to get pissed off about what is happening is because up to the stabbing, it was all convincing. And enthralling. It was all one Public Service Broadcast and all about the awareness. And it feels like we all got emotionally involved for no good reason because Ho-Ho-Ho apparently it's entertainment and drama and therefore we will have stabbings and people acting out of character and unicorns. Why the f*ck not, at this point?.
The writers know their limitations, including the fact they can't have a 5 year-old talk about mummy stabbing daddy, or even a child actor who can sound like they are 5 years-old. So why are they persisting with putting Henry at the centre of it all? It's utterly ridiculous and makes it all sound implausible.